This repository has been archived by the owner on Sep 18, 2023. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 14
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Supporting long and short options using an MIT licensed getopt implementation. We use unique negative numbers to denote options without a short option. Fixes issue 63 v2: - Added a comment that -1 shouldn't be used as short opt for an option with a long opt only as it will conflict with the getopt_long error check. - Added a copyright header in getopt.c. (Neil Roberts) - Moved the getopt.h/c in src/ and named the latter in VKRUNNERBIN_SOURCE_FILES. (Neil Roberts) - In opt_help() the format arg was replaced with %-7s so that the columns line up properly. (Neil Roberts)
- Loading branch information
Showing
5 changed files
with
369 additions
and
79 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,238 @@ | ||
/* Copyright © 2005-2012 Rich Felker | ||
* | ||
* Permission is hereby granted, free of charge, to any person obtaining | ||
* a copy of this software and associated documentation files (the | ||
* "Software"), to deal in the Software without restriction, including | ||
* without limitation the rights to use, copy, modify, merge, publish, | ||
* distribute, sublicense, and/or sell copies of the Software, and to | ||
* permit persons to whom the Software is furnished to do so, subject to | ||
* the following conditions: | ||
* | ||
* The above copyright notice and this permission notice shall be | ||
* included in all copies or substantial portions of the Software. | ||
* | ||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | ||
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY | ||
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | ||
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | ||
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
*/ | ||
|
||
#include <stddef.h> | ||
#include <stdio.h> | ||
#include <string.h> | ||
#include "getopt.h" | ||
|
||
char *optarg; | ||
int optind=1, opterr=1, optopt, __optpos, optreset=0; | ||
|
||
#define optpos __optpos | ||
|
||
static void __getopt_msg(const char *a, const char *b, const char *c, size_t l) | ||
{ | ||
FILE *f = stderr; | ||
#if !defined(WIN32) && !defined(_WIN32) | ||
flockfile(f); | ||
#endif | ||
fputs(a, f); | ||
fwrite(b, strlen(b), 1, f); | ||
fwrite(c, 1, l, f); | ||
fputc('\n', f); | ||
#if !defined(WIN32) && !defined(_WIN32) | ||
funlockfile(f); | ||
#endif | ||
} | ||
|
||
int getopt(int argc, char * const argv[], const char *optstring) | ||
{ | ||
int i, c, d; | ||
int k, l; | ||
char *optchar; | ||
|
||
if (!optind || optreset) { | ||
optreset = 0; | ||
__optpos = 0; | ||
optind = 1; | ||
} | ||
|
||
if (optind >= argc || !argv[optind]) | ||
return -1; | ||
|
||
if (argv[optind][0] != '-') { | ||
if (optstring[0] == '-') { | ||
optarg = argv[optind++]; | ||
return 1; | ||
} | ||
return -1; | ||
} | ||
|
||
if (!argv[optind][1]) | ||
return -1; | ||
|
||
if (argv[optind][1] == '-' && !argv[optind][2]) | ||
return optind++, -1; | ||
|
||
if (!optpos) optpos++; | ||
c = argv[optind][optpos], k = 1; | ||
optchar = argv[optind]+optpos; | ||
optopt = c; | ||
optpos += k; | ||
|
||
if (!argv[optind][optpos]) { | ||
optind++; | ||
optpos = 0; | ||
} | ||
|
||
if (optstring[0] == '-' || optstring[0] == '+') | ||
optstring++; | ||
|
||
i = 0; | ||
d = 0; | ||
do { | ||
d = optstring[i], l = 1; | ||
if (l>0) i+=l; else i++; | ||
} while (l && d != c); | ||
|
||
if (d != c) { | ||
if (optstring[0] != ':' && opterr) | ||
__getopt_msg(argv[0], ": unrecognized option: ", optchar, k); | ||
return '?'; | ||
} | ||
if (optstring[i] == ':') { | ||
if (optstring[i+1] == ':') optarg = 0; | ||
else if (optind >= argc) { | ||
if (optstring[0] == ':') return ':'; | ||
if (opterr) __getopt_msg(argv[0], | ||
": option requires an argument: ", | ||
optchar, k); | ||
return '?'; | ||
} | ||
if (optstring[i+1] != ':' || optpos) { | ||
optarg = argv[optind++] + optpos; | ||
optpos = 0; | ||
} | ||
} | ||
return c; | ||
} | ||
|
||
static void permute(char *const *argv, int dest, int src) | ||
{ | ||
char **av = (char **)argv; | ||
char *tmp = av[src]; | ||
int i; | ||
for (i=src; i>dest; i--) | ||
av[i] = av[i-1]; | ||
av[dest] = tmp; | ||
} | ||
|
||
static int __getopt_long_core(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly) | ||
{ | ||
optarg = 0; | ||
if (longopts && argv[optind][0] == '-' && | ||
((longonly && argv[optind][1] && argv[optind][1] != '-') || | ||
(argv[optind][1] == '-' && argv[optind][2]))) | ||
{ | ||
int colon = optstring[optstring[0]=='+'||optstring[0]=='-']==':'; | ||
int i, cnt, match = -1; | ||
char *opt; | ||
for (cnt=i=0; longopts[i].name; i++) { | ||
const char *name = longopts[i].name; | ||
opt = argv[optind]+1; | ||
if (*opt == '-') opt++; | ||
for (; *name && *name == *opt; name++, opt++); | ||
if (*opt && *opt != '=') continue; | ||
match = i; | ||
if (!*name) { | ||
cnt = 1; | ||
break; | ||
} | ||
cnt++; | ||
} | ||
if (cnt==1) { | ||
i = match; | ||
optind++; | ||
optopt = longopts[i].val; | ||
if (*opt == '=') { | ||
if (!longopts[i].has_arg) { | ||
if (colon || !opterr) | ||
return '?'; | ||
__getopt_msg(argv[0], | ||
": option does not take an argument: ", | ||
longopts[i].name, | ||
strlen(longopts[i].name)); | ||
return '?'; | ||
} | ||
optarg = opt+1; | ||
} else if (longopts[i].has_arg == required_argument) { | ||
if (!(optarg = argv[optind])) { | ||
if (colon) return ':'; | ||
if (!opterr) return '?'; | ||
__getopt_msg(argv[0], | ||
": option requires an argument: ", | ||
longopts[i].name, | ||
strlen(longopts[i].name)); | ||
return '?'; | ||
} | ||
optind++; | ||
} | ||
if (idx) *idx = i; | ||
if (longopts[i].flag) { | ||
*longopts[i].flag = longopts[i].val; | ||
return 0; | ||
} | ||
return longopts[i].val; | ||
} | ||
if (argv[optind][1] == '-') { | ||
if (!colon && opterr) | ||
__getopt_msg(argv[0], cnt ? | ||
": option is ambiguous: " : | ||
": unrecognized option: ", | ||
argv[optind]+2, | ||
strlen(argv[optind]+2)); | ||
optind++; | ||
return '?'; | ||
} | ||
} | ||
return getopt(argc, argv, optstring); | ||
} | ||
|
||
static int __getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly) | ||
{ | ||
int ret, skipped, resumed; | ||
if (!optind || optreset) { | ||
optreset = 0; | ||
__optpos = 0; | ||
optind = 1; | ||
} | ||
if (optind >= argc || !argv[optind]) return -1; | ||
skipped = optind; | ||
if (optstring[0] != '+' && optstring[0] != '-') { | ||
int i; | ||
for (i=optind; ; i++) { | ||
if (i >= argc || !argv[i]) return -1; | ||
if (argv[i][0] == '-' && argv[i][1]) break; | ||
} | ||
optind = i; | ||
} | ||
resumed = optind; | ||
ret = __getopt_long_core(argc, argv, optstring, longopts, idx, longonly); | ||
if (resumed > skipped) { | ||
int i, cnt = optind-resumed; | ||
for (i=0; i<cnt; i++) | ||
permute(argv, skipped, optind-1); | ||
optind = skipped + cnt; | ||
} | ||
return ret; | ||
} | ||
|
||
int getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx) | ||
{ | ||
return __getopt_long(argc, argv, optstring, longopts, idx, 0); | ||
} | ||
|
||
int getopt_long_only(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx) | ||
{ | ||
return __getopt_long(argc, argv, optstring, longopts, idx, 1); | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,53 @@ | ||
/* | ||
Copyright 2005-2014 Rich Felker, et al. | ||
Permission is hereby granted, free of charge, to any person obtaining | ||
a copy of this software and associated documentation files (the | ||
"Software"), to deal in the Software without restriction, including | ||
without limitation the rights to use, copy, modify, merge, publish, | ||
distribute, sublicense, and/or sell copies of the Software, and to | ||
permit persons to whom the Software is furnished to do so, subject to | ||
the following conditions: | ||
The above copyright notice and this permission notice shall be | ||
included in all copies or substantial portions of the Software. | ||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | ||
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY | ||
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | ||
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | ||
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
*/ | ||
|
||
#ifndef _GETOPT_H | ||
#define _GETOPT_H | ||
|
||
#ifdef __cplusplus | ||
extern "C" { | ||
#endif | ||
|
||
int getopt(int, char * const [], const char *); | ||
extern char *optarg; | ||
extern int optind, opterr, optopt, optreset; | ||
|
||
struct option { | ||
const char *name; | ||
int has_arg; | ||
int *flag; | ||
int val; | ||
}; | ||
|
||
int getopt_long(int, char *const *, const char *, const struct option *, int *); | ||
int getopt_long_only(int, char *const *, const char *, const struct option *, int *); | ||
|
||
#define no_argument 0 | ||
#define required_argument 1 | ||
#define optional_argument 2 | ||
|
||
#ifdef __cplusplus | ||
} | ||
#endif | ||
|
||
#endif |
Oops, something went wrong.